Ataksik Hastalarda Pozisyon Hissi ile Postural Kontrol İlişkisinin Değerlendirilmesi

Abstract

This study was planned to investigate the relationship between position sense and postural control and reveal the different roles of the trunk and extremities in this relationship in ataxic patients by comparing healthy individuals. Twenty ataxic individuals whose mean age of 34.75 ± 8.83 years and 20 healthy individuals whose mean age of 31.25 ± 6.33 years were included. After the demographic informations of the individuals were recorded; disease severity (International Cooperative Ataxia Rating Scale), trunk control (Trunk Impairment Scale), risk of falling (Timed Up and Go Test), dynamic balance (Functional Reach Test), performance based balance (Berg Balance Scale) were evaluated. The objective assessment of postural control were performed by Sensory Organization Test, Limits of Stability Test and Unilateral Stance Test in Computerized Dynamic Posturography (CDP). Baseline Digital Inclinometer was used to measure the position sense of upper extremity, lower extremity and trunk of the individuals. As a result of the study, it were seen that repositioning error degree of the trunk and extremity position sense were higher in the ataxic patients than the healthy group and also the scores of the clinical and objective tests used in postural control evaluation were lower in ataxic patients (p <0,05). In ataxic patients, it was found that the trunk position sense was associated with almost all evaluated parameters including sensory integration, postural sway, limits of stability, performance-based balance; the lower extremity position sense was associated with dynamic process of postural control such as walking and turning activites and also the upper limb position sense was associated with disease severity and limits of stability (p <0.05). As a result; the impairment of postural control, which is the most important cause of activity and participitation limitations in ataxic patients, is not only affected by motor disorders, but also by sensory disturbances. The results of our study have been shown that the impairment of position sense in ataxic patients were higher than healthy individuals, it affected the different components of postural control and trunk and extremities had different roles in this relationship.